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Tunnell NC, Corner SE, Roque AD, Kroll JL, Ritz T, Meuret AE. Biobehavioral approach to distinguishing panic symptoms from medical illness. Front Psychiatry 2024; 15:1296569. [PMID: 38779550 PMCID: PMC11109415 DOI: 10.3389/fpsyt.2024.1296569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 03/19/2024] [Indexed: 05/25/2024] Open
Abstract
Panic disorder is a common psychiatric diagnosis characterized by acute, distressing somatic symptoms that mimic medically-relevant symptoms. As a result, individuals with panic disorder overutilize personal and healthcare resources in an attempt to diagnose and treat physical symptoms that are often medically benign. A biobehavioral perspective on these symptoms is needed that integrates psychological and medical knowledge to avoid costly treatments and prolonged suffering. This narrative review examines six common somatic symptoms of panic attacks (non-cardiac chest pain, palpitations, dyspnea, dizziness, abdominal distress, and paresthesia), identified in the literature as the most severe, prevalent, or critical for differential diagnosis in somatic illness, including long COVID. We review somatic illnesses that are commonly comorbid or produce panic-like symptoms, their relevant risk factors, characteristics that assist in distinguishing them from panic, and treatment approaches that are typical for these conditions. Additionally, this review discusses key factors, including cultural considerations, to assist healthcare professionals in differentiating benign from medically relevant symptoms in panic sufferers.
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Affiliation(s)
- Natalie C. Tunnell
- Department of Psychology, Southern Methodist University, Dallas, TX, United States
- Department of Psychiatry & Behavioral Sciences, The University of Kansas Medical Center, Kansas City, KS, United States
| | - Sarah E. Corner
- Department of Psychology, Southern Methodist University, Dallas, TX, United States
| | - Andres D. Roque
- Department of Psychology, Southern Methodist University, Dallas, TX, United States
- Primary Care Department, Miami VA Healthcare System, Miami, FL, United States
| | - Juliet L. Kroll
- Department of Psychology, Southern Methodist University, Dallas, TX, United States
- Department of Palliative, Rehabilitation and Integrative Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Thomas Ritz
- Department of Psychology, Southern Methodist University, Dallas, TX, United States
| | - Alicia E. Meuret
- Department of Psychology, Southern Methodist University, Dallas, TX, United States
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Aljadani A, Alshammari K, Alshammari M, Alshammari S, Alhuwaydi A, AbouZed M, Shabaan I, Elzahab N, Altuhayni A, Alghasab N. Prevalence and Predictive Factors of Panic Disorder among Adults in Saudi Arabia: A Cross-Sectional Study. J Epidemiol Glob Health 2024:10.1007/s44197-024-00208-6. [PMID: 38372895 DOI: 10.1007/s44197-024-00208-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Accepted: 02/14/2024] [Indexed: 02/20/2024] Open
Abstract
Panic disorder (PD) is a severe anxiety disorder characterized by recurrent and unexpected panic attacks that cause intense distress. Despite the high prevalence of panic disorder and its significant impact on life, limited research has been conducted on its prevalence and their associated factors in Saudi Arabia. This study seeks to contribute to the understanding of PD among adults in Saudi Arabia by examining its prevalence and associated factors, using an online survey method. A validated questionnaire-based cross-sectional study was conducted targeting 1276 Saudi adults. Data were collected electronically via Google Forms from the eligible participants. The questionnaire comprised three sections: sociodemographic information, medical history, and a validated diagnostic tool for PD. The prevalence of PD among Saudi adults was 13.1%. Most individuals with PD experienced their first panic attack before the age of 18. Only 38.3% individuals with PD sought medical attention, and approximately one-third of those who sought help did not receive a diagnosis. Multiple logistic regression analysis revealed that significant risk factors for PD included being female; having chronic health problems, a comorbid psychiatric disorder, a high body mass index; and experiencing suicidal ideation (P < 0.05). The highest risk was associated with chronic diseases (adjusted odds ratio = 3.1, 95% confidence interval: 2.1-4.6). This study demonstrates that PD is a prevalent and debilitating mental health condition among Saudi Arabian adults. Non-mental health physicians should be aware of PD, as many cases remain undiagnosed.
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Affiliation(s)
- Ahmed Aljadani
- Internal Medicine Department, Division of Psychiatry, University of Hail, Hail, Saudi Arabia.
| | - Khalid Alshammari
- Internal Medicine Department, Division of Psychiatry, University of Hail, Hail, Saudi Arabia
| | - Mossa Alshammari
- Internal Medicine Department, Division of Psychiatry, University of Hail, Hail, Saudi Arabia
| | - Sulaiman Alshammari
- Internal Medicine Department, Division of Psychiatry, University of Hail, Hail, Saudi Arabia
| | - Ahmed Alhuwaydi
- Internal Medicine Department, Division of Psychiatry, Jouf University, Sakaka, Saudi Arabia
| | - Mohamed AbouZed
- Psychiatry Department, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
- Psychiatry Department, Eradah Mental Complex, Hail, Saudi Arabia
| | - Islam Shabaan
- Psychiatry Department, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
- Psychiatry Department, Eradah Mental Complex, Hail, Saudi Arabia
| | - Nasr Elzahab
- Psychiatry Department, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
| | | | - Naif Alghasab
- Internal Medicine Department, University of Hail, Hail, Saudi Arabia
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Kang SJ, Kim JH, Kim DI, Roberts BZ, Han S. A pontomesencephalic PACAPergic pathway underlying panic-like behavioral and somatic symptoms in mice. Nat Neurosci 2024; 27:90-101. [PMID: 38177337 DOI: 10.1038/s41593-023-01504-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 10/19/2023] [Indexed: 01/06/2024]
Abstract
Panic disorder is characterized by uncontrollable fear accompanied by somatic symptoms that distinguish it from other anxiety disorders. Neural mechanisms underlying these unique symptoms are not completely understood. Here, we report that the pituitary adenylate cyclase-activating polypeptide (PACAP)-expressing neurons in the lateral parabrachial nucleus projecting to the dorsal raphe are crucial for panic-like behavioral and physiological alterations. These neurons are activated by panicogenic stimuli but inhibited in conditioned fear and anxiogenic conditions. Activating these neurons elicits strong defensive behaviors and rapid cardiorespiratory increase without creating aversive memory, whereas inhibiting them attenuates panic-associated symptoms. Chemogenetic or pharmacological inhibition of downstream PACAP receptor-expressing dorsal raphe neurons abolishes panic-like symptoms. The pontomesencephalic PACAPergic pathway is therefore a likely mediator of panicogenesis, and may be a promising therapeutic target for treating panic disorder.
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Affiliation(s)
- Sukjae J Kang
- Peptide Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Jong-Hyun Kim
- Peptide Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, USA
- Center for Cognition and Sociality, Institute for Basic Science, Daejeon, Republic of Korea
| | - Dong-Il Kim
- Peptide Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Benjamin Z Roberts
- Peptide Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, USA
- Neuroscience Graduate Program, University of California San Diego, La Jolla, CA, USA
| | - Sung Han
- Peptide Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, USA.
- Neuroscience Graduate Program, University of California San Diego, La Jolla, CA, USA.
- Center for Neuroscience Imaging Research, Institute for Basic Science, Suwon, Republic of Korea.
- Department of Biomedical Engineering, Sungkyunkwan University, Suwon, Republic of Korea.
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Khanagar SB, Altuwayjiri RJ, Albarqy NM, Alzahrani GA, Alhusayni HA, Alsaif SY. Prevalence, Symptoms, and Triggering Factors of Panic Attacks among Dental Students in Riyadh Saudi Arabia-A Cross Sectional Survey. Healthcare (Basel) 2023; 11:2971. [PMID: 37998463 PMCID: PMC10671099 DOI: 10.3390/healthcare11222971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/13/2023] [Accepted: 11/15/2023] [Indexed: 11/25/2023] Open
Abstract
Panic disorder by definition is an anxiety disorder of unexpected and repeated episodes of intense fear. Panic attacks are usually diagnosed by four or more of a set of symptoms that include palpitations, sweating, trembling, shortness of breath, chest pain, nausea, dizziness, and hot flushes. They usually interfere with daily life situations and also interfere with education. Hence, the aim of this study was to assess the prevalence of panic attacks, their symptoms, and triggering factors among dental students in Riyadh, Saudi Arabia. Data were collected from 394 students using a structured and validated questionnaire. The prevalence of panic attacks among dental students in Riyadh, Saudi Arabia, was 42.9%. Most of the participants who experienced higher episodes of panic attacks were females (53.4%) when compared to males (24.5%). Third year students displayed greater (58.3%) episodes of panic attacks compared to their respective counterparts. The most reported symptom of panic attacks was rapid or pounding heartbeat followed by breathlessness, chest pain, and shaking or trembling. It was also noted that most of the participants (63.31%) encountered a panic attack for the first time after joining dental school. The situations where dental students frequently experienced panic attacks were during exams, clinic procedures, giving presentations, and especially while under a lot of stress. The high occurrence of panic attacks among dental students highlights the importance of providing support programs and implementing preventive measures to help students, particularly those who are most susceptible to higher levels of these psychological conditions. Dental students experiencing panic attacks should be provided with necessary counseling sessions or psychiatric consultation in order to overcome such scenarios. Dental schools should consider these findings when planning the dental curriculum. Hence, the role of the faculty members is essential in these situations to provide support for the affected students.
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Affiliation(s)
- Sanjeev B. Khanagar
- Preventive Dental Science Department, College of Dentistry, King Saud bin Abdulaziz University for Health Sciences, Riyadh 11426, Saudi Arabia
- King Abdullah International Medical Research Centre, Ministry of National Guard Health Affairs, Riyadh 11481, Saudi Arabia
| | - Reema Jamal Altuwayjiri
- College of Dentistry, King Saud bin Abdulaziz University for Health Sciences, Riyadh 11426, Saudi Arabia; (R.J.A.)
| | - Nadeen Mohammed Albarqy
- College of Dentistry, King Saud bin Abdulaziz University for Health Sciences, Riyadh 11426, Saudi Arabia; (R.J.A.)
| | - Ghida Ahmed Alzahrani
- College of Dentistry, King Saud bin Abdulaziz University for Health Sciences, Riyadh 11426, Saudi Arabia; (R.J.A.)
| | - Hibah Ali Alhusayni
- College of Dentistry, King Saud bin Abdulaziz University for Health Sciences, Riyadh 11426, Saudi Arabia; (R.J.A.)
| | - Sarah Yousef Alsaif
- College of Dentistry, King Saud bin Abdulaziz University for Health Sciences, Riyadh 11426, Saudi Arabia; (R.J.A.)
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Roca M, Villamor AT, Molinera VG, Gili M. Characteristics of patients with panic disorder attended in primary care during the COVID-19 pandemic: A cross-sectional multicenter study. Aten Primaria 2023; 55:102703. [PMID: 37422988 PMCID: PMC10272946 DOI: 10.1016/j.aprim.2023.102703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 06/07/2023] [Accepted: 06/13/2023] [Indexed: 07/11/2023] Open
Abstract
OBJECTIVE To assess the prevalence of panic disorder during the second and third waves of the COVID-19 pandemic. DESIGN Cross-sectional multicenter study. SETTING Primary care. PARTICIPANTS Participating primary care physicians selected patients visiting their primary care centers for any reason over a 16-month period. MAIN OUTCOME MEASURE Diagnosis of panic disorder was established using The Primary Care Evaluation of Mental Disorders (PRIME-MD) instrument. RESULTS Of a total of 678 patients who met the inclusion criteria, 36 presented with panic disorder, with a prevalence of 5.3% (95% confidence interval 3.6-7.0). A total of 63.9% of cases occurred in women. The mean age was 46.7±17.1 years. Socioeconomic difficulties, such as very low monthly income rate, unemployment, and financial constraints to make housing payments and to make ends meet were more frequent in patients with panic disorders as compared to patients without panic disorder. A high level of stress (Holmes-Rahe scale>300), concomitant chronic fatigue syndrome and irritable bowel disease, and having financial difficulties in the past 6 months were associated with factors of panic disorder. DISCUSSION This study characterizes patients with panic disorder diagnosed with a validated instrument during the COVID-19 pandemic and identified risk factors for this disease. CONCLUSIONS In non-selected consecutive primary care attendees in real-world conditions during the COVID-19 pandemic, the prevalence of panic disorder was 5.3%, being more frequent in women. There is a need to enhance primary care resources for mental health care during the duration of the pandemic and beyond.
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Affiliation(s)
- Miquel Roca
- Department of Medicine, Institut Universitari d'Investigació en Ciències de la Salut, IDISBA, Universitat de les Illes Balears, Palma de Mallorca, Spain.
| | | | | | - Margarita Gili
- Department of Psychology, Institut Universitari d'Investigació en Ciències de la Salut, IDISBA, Universitat de les Illes Balears, Palma de Mallorca, Spain
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Meuret AE, Rosenfield D, Millard MM, Ritz T. Biofeedback Training to Increase P co2 in Asthma With Elevated Anxiety: A One-Stop Treatment of Both Conditions? Psychosom Med 2023; 85:440-448. [PMID: 36961348 PMCID: PMC10238676 DOI: 10.1097/psy.0000000000001188] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/25/2023]
Abstract
OBJECTIVE Anxiety is highly prevalent in individuals with asthma. Asthma symptoms and medication can exacerbate anxiety, and vice versa. Unfortunately, treatments of comorbid anxiety and asthma are largely lacking. A problematic feature common to both conditions is hyperventilation. It adversely affects lung function and symptoms in asthma and anxiety. We examined whether a treatment to reduce hyperventilation, shown to improve asthma symptoms, also improves anxiety in asthma patients with high anxiety. METHOD One hundred twenty English- or Spanish-speaking adult patients with asthma were randomly assigned to either Capnometry-Assisted Respiratory Training (CART) to raise P co2 or feedback to slow respiratory rate (SLOW). Although anxiety was not an inclusion criterion, 21.7% met clinically relevant anxiety levels on the Hospital Anxiety and Depression Scale (HADS). Anxiety (HADS-A) and depression (HADS-D) scales, anxiety sensitivity (Anxiety Sensitivity Index [ASI]), and negative affect (Negative Affect Scale of the Positive Affect Negative Affect Schedule) were assessed at baseline, posttreatment, 1-month follow-up, and 6-month follow-up. RESULTS In this secondary analysis, asthma patients with high baseline anxiety showed greater reductions in ASI and PANAS-N in CART than in SLOW ( p values ≤ .005, Cohen d values ≥ 0.58). Furthermore, at 6-month follow-up, these patients also had lower ASI, PANAS-N, and HADS-D in CART than in SLOW ( p values ≤ .012, Cohen d values ≥ 0.54). Patients with low baseline anxiety did not have differential outcomes in CART than in SLOW. CONCLUSIONS For asthma patients with high anxiety, our brief training designed to raise P co2 resulted in significant and sustained reductions in anxiety sensitivity and negative affect compared with slow-breathing training. The findings lend support for P co2 as a potential physiological target for anxiety reduction in asthma. TRIAL REGISTRATION Clinicaltrials.gov Identifier: NCT00975273 .
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Affiliation(s)
- Alicia E. Meuret
- Department of Psychology, Southern Methodist University, Dallas, Texas, USA
| | - David Rosenfield
- Department of Psychology, Southern Methodist University, Dallas, Texas, USA
| | - Mark. M. Millard
- Baylor Martha Foster Lung Care Center, Baylor University Medical Center, Dallas, Texas, USA
| | - Thomas Ritz
- Department of Psychology, Southern Methodist University, Dallas, Texas, USA
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Does panic disorder increase the risk of cardiovascular diseases in diabetics?: A nationwide population-based study. J Affect Disord 2023; 325:604-610. [PMID: 36681301 DOI: 10.1016/j.jad.2023.01.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/13/2023] [Accepted: 01/16/2023] [Indexed: 01/20/2023]
Abstract
BACKGROUND Several studies have suggested a link between panic disorder (PD) and cardiovascular disease (CVD). However, the extent to which PD confers risk for CVD is still unclear, particularly in diabetics, a group showing high risk for CVD. METHODS A nationwide population-based cohort of 1,624,718 patients with type 2 diabetes were selected from the National Health Screening Program database covering the years 2009 to 2012. The subjects were divided into two groups: those without panic disorder (non-PD group, n = 1,618,263) and those with newly diagnosed PD (PD-group, n = 6455). Follow-up of subjects for up to 10 years was conducted for evaluation of the incidences of myocardial infarction (MI), stroke, and death. RESULTS After adjusting for the baseline covariates and diabetes mellitus (DM)-related variables, no difference in the future risk of MI and stroke was observed between the non-PD group and the PD group. Compared with the non-PD group, the PD group showed an increase in the future risk of death. [adjusted hazard ratio (aHR) = 1.120, 95 % confidence interval (CI): 1.039-1.206]. In contrast to the population aged <40 and > 65 years, in the age group of 40-64 years a significantly higher risk of stroke was observed in the PD group compared with the non-PD group (aHR = 1.352, 95%CI: 1.136-1.610). LIMITATION The diagnoses were based on the diagnostic codes of the claim data. CONCLUSION The current findings suggested that PD might not contribute to the risk of future MI and stroke in diabetics who have already been at risk of various cardiovascular complications.
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Krohn F, Novello M, van der Giessen RS, De Zeeuw CI, Pel JJM, Bosman LWJ. The integrated brain network that controls respiration. eLife 2023; 12:83654. [PMID: 36884287 PMCID: PMC9995121 DOI: 10.7554/elife.83654] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 01/29/2023] [Indexed: 03/09/2023] Open
Abstract
Respiration is a brain function on which our lives essentially depend. Control of respiration ensures that the frequency and depth of breathing adapt continuously to metabolic needs. In addition, the respiratory control network of the brain has to organize muscular synergies that integrate ventilation with posture and body movement. Finally, respiration is coupled to cardiovascular function and emotion. Here, we argue that the brain can handle this all by integrating a brainstem central pattern generator circuit in a larger network that also comprises the cerebellum. Although currently not generally recognized as a respiratory control center, the cerebellum is well known for its coordinating and modulating role in motor behavior, as well as for its role in the autonomic nervous system. In this review, we discuss the role of brain regions involved in the control of respiration, and their anatomical and functional interactions. We discuss how sensory feedback can result in adaptation of respiration, and how these mechanisms can be compromised by various neurological and psychological disorders. Finally, we demonstrate how the respiratory pattern generators are part of a larger and integrated network of respiratory brain regions.
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Affiliation(s)
- Friedrich Krohn
- Department of Neuroscience, Erasmus MC, Rotterdam, Netherlands
| | - Manuele Novello
- Department of Neuroscience, Erasmus MC, Rotterdam, Netherlands
| | | | - Chris I De Zeeuw
- Department of Neuroscience, Erasmus MC, Rotterdam, Netherlands.,Netherlands Institute for Neuroscience, Royal Academy of Arts and Sciences, Amsterdam, Netherlands
| | - Johan J M Pel
- Department of Neuroscience, Erasmus MC, Rotterdam, Netherlands
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Kroll JL, Ritz T. Asthma, the central nervous system, and neurocognition: Current findings, potential mechanisms, and treatment implications. Neurosci Biobehav Rev 2023; 146:105063. [PMID: 36708797 DOI: 10.1016/j.neubiorev.2023.105063] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 01/16/2023] [Accepted: 01/21/2023] [Indexed: 01/26/2023]
Abstract
Accumulating behavioral evidence suggests that asthma is associated with cognitive deficits. A number of studies have identified potential biological contributions to cognition in asthma; however, mechanistic pathways of central nervous system (CNS) involvement in asthma are yet to be established. We therefore conducted a literature review to identify studies examining potential CNS contributions to cognition in asthma. In this review, we discuss our general understanding of the CNS in asthma in the context of cognitive performance and outline a working model of mechanistic pathways linking the proposed neural influences of asthma pathology with cognition. To this extent, we incorporate neural, behavioral, psychological, social and environmental factors. Finally, we underscore the clinical significance of the CNS and neurocognitive sequelae in asthma, highlighting potential opportunities for routine monitoring, therapeutic intervention, and recommend key areas for future research.
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Affiliation(s)
- Juliet L Kroll
- Department of Psychology, Southern Methodist University, Dallas, TX, USA; Department of Palliative, Rehabilitation and Integrative Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - Thomas Ritz
- Department of Psychology, Southern Methodist University, Dallas, TX, USA
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Latency to selective serotonin reuptake inhibitor vs benzodiazepine treatment in patients with panic disorder: a naturalistic study. CNS Spectr 2023; 28:46-52. [PMID: 34736545 DOI: 10.1017/s1092852921000869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Panic disorder (PD) is a prevalent and impairing anxiety disorder with previous reports suggesting that the longer the condition remains untreated, the greater the likelihood of nonresponse. However, patients with PD may wait for years before receiving a guideline-recommended pharmacological treatment. The widespread prescription of benzodiazepines (BDZ) for managing anxiety symptoms and disorders might delay the administration of pharmacotherapy according to guidelines (eg, selective serotonin reuptake inhibitors, SSRIs). The present study aimed to determine the mean duration of untreated illness (DUI) in a sample of PD patients, to quantify and compare DUI-SSRI to DUI-BDZ, and to compare findings with those from previous investigations. METHODS Three hundred and fourteen patients with a Diagnostic and Statistical Manual of Mental Disorders, fifth edition diagnosis of PD were recruited from an Italian outpatient psychotherapy unit, and epidemiological and clinical variables were retrieved from medical records. Descriptive statistical analyses were undertaken for sociodemographic and clinical variables, Wilcoxon matched-pair signed rank test was applied to compare the distribution of DUI-SSRI vs DUI-BDZ, and Welch's t test was performed to compare findings with those from previous studies. RESULTS The mean DUI-SSRI of the total sample was 64.25 ± 112.74 months, while the mean DUI-BDZ was significantly shorter (35.09 ± 78.62 months; P < 0.0001). A significantly longer DUI-SSRI, compared to findings from previous studies, was also observed. CONCLUSIONS The present results confirm a substantial delay in implementing adequate pharmacological treatments in patients with PD, and highlight the discrepancy between recommendations from international treatment guidelines and common clinical practice in relation to BDZ prescription.
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Kopańska M, Dejnowicz-Velitchkov A, Bartman P, Szczygielski J. MiniQEEG and Neurofeedback in Diagnosis and Treatment of COVID-19-Related Panic Attacks: A Case Report. Brain Sci 2022; 12:1541. [PMID: 36421865 PMCID: PMC9688264 DOI: 10.3390/brainsci12111541] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 09/29/2023] Open
Abstract
BACKGROUND Both the global COVID-19 pandemic situation, as well as the current political situation in Eastern Europe may exacerbate anxiety and contribute to stress-related disorders such as panic disorder. Electroencephalography (EEG)-based neurofeedback provides both assessment of the subject's brainwave activity as well as the possibility of its therapeutic correction. It is possible that it can be implemented as an auxiliary treatment in panic disorders of different origin. The aim of this feasibility study was to demonstrate (both short- and long-term) effectiveness of neurofeedback therapy in a patient with previously diagnosed panic attacks, related to fear of COVID-19 infection. METHODS We report the case study of a 47-year-old man affected by panic attacks, related to his profound, constant fear of COVID-19 infection and its sequelae. For the initial diagnostic workup, several clinical and research tools were used: 1. Baseline psychological exam; 2. Anxiety-targeted interview performed by miniQEEG therapist; 3. Analysis of previous clinical test results (EEG record/lab blood test); and 4. The miniQEEG exam (central strip recording Cz-C3-C4), The patient was subjected to regular EEG Neurofeedback sessions for two consecutive months. After completing the treatment, follow-up tests, as listed above were repeated immediately after completing the whole treatment program, as well as 1 and 2 years later. MiniQEEG results were compared with healthy control (age-matched male subject not affected with panic attacks) and evaluated over the time that the subject was involved in the study. RESULTS Initially, the patient was suffering from severe panic attacks accompanied by vegetative symptoms and from destructive and negative thoughts. After 8 consecutive weeks of treatment encompassing sixteen QEEG neurofeedback training sessions (each lasting 30 min), a subjective improvement of his complaints was reported. More importantly, QEEG records of the patient also improved, approximating the pattern of QEEG recorded in the healthy control. CONCLUSION In this single case-based feasibility analysis, we demonstrate that systematic application of QEEG-Neurofeedback may result in manifest and durable therapeutic effect. Of note, use of this treatment may be a valuable option for patients with panic attack/panic disorder, especially if related to the psychological burden of the COVID-19/war era. Future studies on a larger patient population, especially with a longitudinal/prospective design, are warranted.
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Affiliation(s)
- Marta Kopańska
- Department of Pathophysiology, Institute of Medical Sciences, University of Rzeszow, 35-959 Rzeszow, Poland
| | | | - Paulina Bartman
- Students Science Club “Reh-Tech”, Institute of Medical Sciences, University of Rzeszow, 35-959 Rzeszow, Poland
| | - Jacek Szczygielski
- Department of Neurosurgery, Institute of Medical Sciences, University of Rzeszow, 35-959 Rzeszow, Poland
- Department of Neurosurgery, Faculty of Medicine, Saarland University, 66123 Saarbrücken, Germany
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Zemestani M, Davoudi F, Farhadi A, Gallagher MW. A preliminary examination of unified protocol for transdiagnostic treatment of emotional disorders in patients with panic disorder: a single-case experimental design in Iran. ANXIETY, STRESS, AND COPING 2022; 35:701-718. [PMID: 34632890 DOI: 10.1080/10615806.2021.1990269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 09/11/2021] [Accepted: 10/01/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND AND OBJECTIVES The majority of patients suffering from anxiety disorders in low- and middle-income countries do not receive evidence-based treatments. The Unified Protocol (UP) for the Transdiagnostic Treatment of Emotional Disorders is an evidence-based cognitive-behavioral intervention designed to treat the range of emotional disorders. DESIGN AND METHODS Using a single-case experimental design five patients with panic disorder were assigned to a 3-week baselines assessment phase followed by eight sessions of UP treatment and 4-week follow-up phases. Multiple outcome measures of panic severity, anxiety sensitivity, affectivity, and overall anxiety severity and impairment were administered weekly during the baseline, intervention, and follow-up phases. RESULTS At post treatment, all participants showed significant reductions in outcome measures, with changes functionally related to treatment and most improvements maintained at 4-week follow-up. CONCLUSION Findings provide preliminary cross-cultural support for UP and add to the growing body of literature showing UP can be useful for patients with anxiety disorders in low- and middle-income countries with non-Western cultures.
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Affiliation(s)
- Mehdi Zemestani
- Department of Psychology, University of Kurdistan, Sanandaj, Iran
| | - Fatemeh Davoudi
- Department of Psychology, University of Kurdistan, Sanandaj, Iran
| | - Ali Farhadi
- Department of Social Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Matthew W Gallagher
- Department of Psychology, University of Houston, Houston, TX, USA
- Texas Institute for Measurement, Evaluation, and Statistics, University of Houston, Houston, TX, USA
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Kopańska M, Ochojska D, Mytych W, Lis MW, Banaś-Ząbczyk A. Development of a brain wave model based on the quantitative analysis of EEG and EEG biofeedback therapy in patients with panic attacks during the COVID-19 pandemic. Sci Rep 2022; 12:14908. [PMID: 36050377 PMCID: PMC9436169 DOI: 10.1038/s41598-022-19068-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 08/24/2022] [Indexed: 11/24/2022] Open
Abstract
The current global crisis facing the world is the COVID-19 pandemic. Infection from the SARS-CoV-2 virus leads to serious health complications and even death. As it turns out, COVID-19 not only physically assails the health of those infected, but also leads to serious mental illness regardless of the presence of the disease. Social isolation, fear, concern for oneself and one's loved ones, all of this occurs when a pandemic overloads people. People exhibit numerous neurological disorders that have never happened to them before. Patients are diagnosed with frequent panic attacks, the result of which can be seen in their Quantitative Electroencephalogram results. This test may be one of the main diagnostic tools of the COVID-19 pandemic. From the results obtained, it is possible to compare and draw conclusions. This method of testing effectively allows EEG biofeedback training and observes its effect on brain activity. The feedback received in this way gives us the opportunity to properly tailor a protocol for the patient and their conditions. Numerous studies support the effectiveness of EEG biofeedback for panic attacks and other psychiatric disorders. The purpose of our study was to show the effectiveness of EEG biofeedback with a Quantitative Electroencephalogram of the brainwave pattern after having COVID-19 and what symptoms may result.
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Affiliation(s)
- Marta Kopańska
- Department of Pathophysiology, Institute of Medical Sciences, Medical College of Rzeszow University, Rzeszow, Poland.
| | - Danuta Ochojska
- Department of Psychology, Institute of Pedagogy, College of Social Sciences, University of Rzeszow, 35-959, Rzeszow, Poland
| | - Wiktoria Mytych
- Students Science Club "Reh-Tech", University of Rzeszow, Rzeszow, Poland
| | - Marcin W Lis
- Department of Zoology and Animal Welfare, Faculty of Animal Science, University of Agriculture in Cracow, 30-059, Cracow, Poland
| | - Agnieszka Banaś-Ząbczyk
- Department of Biology, Institute of Medical Sciences, Medical College of Rzeszow University, Rzeszow, Poland
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14
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Brown A, Noone K, Rapee RM, Kangas M, Anderson V, Bayer JK. Preventing internalising problems in preschoolers with chronic physical health conditions. J Child Health Care 2022; 26:228-241. [PMID: 33913784 DOI: 10.1177/13674935211013192] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This pilot study aimed to explore the suitability of a preventative intervention for internalising problems in young children with chronic physical health conditions. The pilot study focused on a subsample of 27 children with chronic physical health conditions within a population-level randomised controlled trial of the Cool Little Kids parenting programme. The Cool Little Kids parenting programme aims to prevent the development of internalising problems in inhibited (shy/anxious) preschool children by educating parents to reduce young children's avoidant coping styles and manage their anxiety/distress. The wider trial recruited 545 temperamentally inhibited preschool children. Measures included child health/development concerns and internalising symptoms at baseline, feedback on Cool Little Kids post-intervention and child internalising problems at one- and two-year longitudinal follow-up. At baseline, inhibited children with and without chronic physical health conditions had levels of internalising symptoms above the normative mean. At post-intervention, parents of children with chronic physical health conditions gave feedback that Cool Little Kids was helpful for managing their child's emotional distress. At follow-up, significantly fewer intervention than control children with chronic physical health conditions had specific phobia after 1 year (25% vs 70%) and specific fear symptoms after 2 years (mean 9.57 vs 16.89). As the pilot findings are promising, a further trial of Cool Little Kids in a physical health treatment service with a larger sample of children with chronic physical illness diagnoses would be worthwhile.
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Affiliation(s)
- Amy Brown
- School of Psychology and Public Health, 2080La Trobe University, Melbourne, Australia
| | - Kate Noone
- School of Psychology and Public Health, 2080La Trobe University, Melbourne, Australia
| | - Ronald M Rapee
- Centre for Emotional Health, 7788Macquarie University, Sydney, Australia
| | - Maria Kangas
- Centre for Emotional Health, 7788Macquarie University, Sydney, Australia
| | - Vicki Anderson
- 34361Murdoch Children's Research Institute, Melbourne, Australia.,Department of Paediatrics, 2281University of Melbourne, Melbourne, Australia
| | - Jordana K Bayer
- School of Psychology and Public Health, 2080La Trobe University, Melbourne, Australia.,34361Murdoch Children's Research Institute, Melbourne, Australia.,Department of Paediatrics, 2281University of Melbourne, Melbourne, Australia
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15
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Chalmers KJ, Rossetto A, Reavley NJ, Jorm AF, Kitchener BA, Kelly CM, Morgan AJ, Bond KS, Cottrill FA. Redevelopment of mental health first aid guidelines for supporting someone experiencing a panic attack: a Delphi study. BMC Psychol 2022; 10:136. [PMID: 35624500 PMCID: PMC9145494 DOI: 10.1186/s40359-022-00843-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 05/17/2022] [Indexed: 12/03/2022] Open
Abstract
Background Panic attacks and panic disorder can have a major impact on the mental health and wellbeing of those who experience them. People with recurrent panic attacks have increased odds of developing a mental disorder and of worsening the course of existing mental disorders. Early intervention efforts at the time that a panic attack occurs might reduce or prevent some of these associated negative outcomes. Expert consensus guidelines for high income Western countries on how to provide mental health first aid for panic attacks were published in 2009. The present study aims to redevelop these guidelines to ensure content reflects current evidence and best practice. Methods The Delphi consensus method was used to determine which helping strategies should be included in the redeveloped guidelines. A survey with items on how to assist someone who is having a panic attack was developed using the 2009 guidelines and a systematic search of grey and academic literature. Panellists with lived experience and professional experience rated these items to determine which helping statements should be included in the guidelines. Results Thirty panellists completed all three surveys. Panellists rated 158 statements, with 83 statements meeting the criteria for inclusion in the redeveloped guidelines. The endorsed statements covered: what the first aider should know about panic attacks, what they should do if they think someone is having a panic attack, what they should do if they are uncertain whether the person is having a panic attack, what they should say and do if they know the person is having a panic attack and what they should do when the panic attack has ended. Conclusion This study has resulted in a more comprehensive set of guidelines than the original version, with the endorsement of 83 helping actions, compared to 27 previously. The redeveloped guidelines provide greater detail on recognising the signs of a panic attack, providing initial assistance, communicating with someone experiencing a panic attack and supporting them to seek appropriate professional help if it is needed. The guidelines will be used in future updates of Mental Health First Aid training courses. Supplementary Information The online version contains supplementary material available at 10.1186/s40359-022-00843-3.
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Affiliation(s)
- Kathryn J Chalmers
- Mental Health First Aid Australia, Parkville, VIC, Australia.,Centre for Mental Health, Melbourne School of Population and Global Health, University of Melbourne, Parkville, VIC, Australia
| | - Alyssia Rossetto
- Mental Health First Aid Australia, Parkville, VIC, Australia. .,Centre for Mental Health, Melbourne School of Population and Global Health, University of Melbourne, Parkville, VIC, Australia.
| | - Nicola J Reavley
- Centre for Mental Health, Melbourne School of Population and Global Health, University of Melbourne, Parkville, VIC, Australia
| | - Anthony F Jorm
- Centre for Mental Health, Melbourne School of Population and Global Health, University of Melbourne, Parkville, VIC, Australia
| | | | - Claire M Kelly
- Mental Health First Aid Australia, Parkville, VIC, Australia
| | - Amy J Morgan
- Centre for Mental Health, Melbourne School of Population and Global Health, University of Melbourne, Parkville, VIC, Australia
| | - Kathy S Bond
- Mental Health First Aid Australia, Parkville, VIC, Australia
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16
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Tremblay MA, Denis I, Turcotte S, DeGrâce M, Tully PJ, Foldes-Busque G. Cognitive-Behavioral Therapy for Panic Disorder in Patients with Stable Coronary Artery Disease: A Feasibility Study. J Clin Psychol Med Settings 2022; 30:28-42. [PMID: 35543901 PMCID: PMC9093559 DOI: 10.1007/s10880-022-09876-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/10/2022] [Indexed: 11/18/2022]
Abstract
Implementing cognitive-behavioral therapy (CBT), the first-line psychological treatment for panic disorder (PD), may be challenging in patients with comorbid coronary artery disease (CAD).This study aimed at assessing the feasibility and acceptability of a CBT for PD protocol that was adapted to patients suffering from comorbid CAD. It also aimed at evaluating the efficacy of the intervention to reduce PD symptomatology and psychological distress and improve quality of life. This was a single-case experimental design with pre-treatment, post-treatment and 6-month follow-up measures. Patients with PD and stable CAD received 14 to 17 individual, 1-h sessions of an adapted CBT for PD protocol. They completed interviews and questionnaires at pre-treatment, post-treatment and at a 6-month follow-up assessing intervention acceptability, PD symptomatology, psychological distress and quality of life. A total of 6 patients out of 7 completed the intervention and 6-month follow-up, indicating satisfactory feasibility. Acceptability was high (medians of ≥ 8.5 out of 9 and ≥ 80%) both at pre and post treatment. Remission rate was of 83% at post-treatment and 6-month follow-up. The intervention appeared to have positive effects on comorbid anxiety and depression symptoms and quality of life. The intervention appeared feasible and acceptable in patients with comorbid CAD. The effects of the adapted CBT protocol on PD symptoms, psychological distress and quality of life are promising and were maintained at the 6-month follow-up. Further studies should aim at replicating the present results in randomized-controlled trials
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Affiliation(s)
- Marie-Andrée Tremblay
- School of Psychology, Université Laval, 2325 rue des Bibliothèques, Quebec, QC, G1V 0A6, Canada.,Research Center of the Centre intégré de santé et de services sociaux de Chaudière-Appalaches, 143 rue Wolfe, Lévis, QC, G6V 3Z1, Canada
| | - Isabelle Denis
- School of Psychology, Université Laval, 2325 rue des Bibliothèques, Quebec, QC, G1V 0A6, Canada.,Research Center of the Centre intégré de santé et de services sociaux de Chaudière-Appalaches, 143 rue Wolfe, Lévis, QC, G6V 3Z1, Canada
| | - Stéphane Turcotte
- Research Center of the Centre intégré de santé et de services sociaux de Chaudière-Appalaches, 143 rue Wolfe, Lévis, QC, G6V 3Z1, Canada
| | - Michel DeGrâce
- Research Center of the Centre intégré de santé et de services sociaux de Chaudière-Appalaches, 143 rue Wolfe, Lévis, QC, G6V 3Z1, Canada
| | - Phillip J Tully
- Faculty of Health and Medical Sciences, The University of Adelaide, 30 Frome Road, Adelaide, SA, 5000, Australia
| | - Guillaume Foldes-Busque
- School of Psychology, Université Laval, 2325 rue des Bibliothèques, Quebec, QC, G1V 0A6, Canada. .,Research Center of the Centre intégré de santé et de services sociaux de Chaudière-Appalaches, 143 rue Wolfe, Lévis, QC, G6V 3Z1, Canada. .,Research Center of the Quebec Heart and Lung Institute, 2725, chemin Sainte-Foy, Quebec, QC, G1V 4G5, Canada.
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17
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Taslidere B, Atsiz A. Evaluation of MINOCA syndrome and HEART score in patients presenting to the emergency department with panic attack and chest pain complaints. Ir J Med Sci 2022; 191:2351-2356. [PMID: 35478305 DOI: 10.1007/s11845-022-03018-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 04/22/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Patients presenting with chest pain may or may not be experiencing a panic attack. Is chest pain caused by a panic attack or myocardial infarction with non-obstructive coronary arteries (MINOCA) syndrome? AIM In this study, we evaluated both MINOCA syndrome and HEART score in patients who presented to the emergency department with panic attacks and chest pain. METHOD Patients who applied to the emergency department with panic disorder and chest pain complaints were included. Patients who met the MINOCA diagnostic criteria were identified. The study was completed with 143 eligible patients out of a total of 217 patients evaluated. The patients were divided into two groups. The first group was those whose symptoms and test results were consistent with MINOCA. The second group was composed of those whose chest pain was considered non-specific. The HEART score of all patients was calculated. The demographic characteristics, symptoms, and HEART scores were compared between the groups. RESULTS Of the 143 patients evaluated in the study, 62 (43.3%) were male and 81 (56.7%) were female. While the mean HEART score was 4.7 ± 1.5 in the MINOCA group, it was 2.0 ± 1.0 in the non-cardiac group, a statistically significant difference. CONCLUSION Clinicians should pay attention to the patient's age, gender, number of attacks per week, HEART score, and which symptoms (palpitations, shortness of breath, and fear of death) are present in patients who meet the panic attack diagnostic criteria. Clinicians should be alert to the MINOCA syndrome in panic attack patients.
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Affiliation(s)
- Bahadır Taslidere
- Department of Emergency Medicine, Faculty of Medicine, Bezmialem Vakıf University, Istanbul, Turkey.
| | - Ahmet Atsiz
- Department of Emergency Medicine, Faculty of Medicine, Bezmialem Vakıf University, Istanbul, Turkey
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18
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Chang HM, Pan CH, Chen PH, Chen YL, Su SS, Tsai SY, Chen CC, Kuo CJ. Premature death and causes of death among patients with panic disorder and comorbid psychiatric disorders: A nationwide cohort study. J Psychiatr Res 2022; 148:340-347. [PMID: 35202994 DOI: 10.1016/j.jpsychires.2022.02.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 12/17/2021] [Accepted: 02/14/2022] [Indexed: 10/19/2022]
Abstract
OBJECTIVES Panic disorder (PD) is associated with high psychiatric and physical comorbidity, but the cause of mortality has not been well studied. This study investigated mortality rates and causes of death in an Asian cohort with PD. METHODS We enrolled a nationwide retrospective cohort of 298,466 persons diagnosed with PD from January 1, 2001, to December 31, 2016. Each cohort member was matched with a comparison one randomly selected from the general population with the same sex, age at entry, and birth year. The data of both the PD cohort and the comparison group were linked with the national mortality database to obtain each individual's mortality status. We used mortality rate ratios (MRRs) to compare mortality risks between the patients with PD and the general population. Stratified analysis of mortality risks was performed based on sex and psychiatric comorbidities. RESULTS PD was associated with a slightly increased mortality risk (MRR, 1.14 [99% CI, 1.11-1.17]). The risk of unnatural death (MRR, 2.83 [99% CI, 2.59-3.10]) was significantly higher among the individuals with PD than among the general population, whereas the risk of overall natural death across all categories was not (MRR, 1.01 [99% CI, 0.98-1.04]). The mortality risk was the highest for suicide (MRR, 4.94 [99% CI, 4.32-5.72]) and was higher in women (MRR, 6.37 [99% CI, 5.25-7.96]) than in men (MRR, 3.77 [99% CI, 3.14-4.64]). Comorbid substance use disorders increased the risk of mortality from natural (MRR, 3.23 [99% CI, 2.59-4.14]) and unnatural (MRR, 9.45 [99% CI, 6.29-17.85]) causes. CONCLUSION PD was associated with increased all-cause mortality, especially suicide. Substance use further increased mortality risk in persons with PD. Targeted treatment for substance use and suicide prevention are essential among persons with PD.
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Affiliation(s)
- Hu-Ming Chang
- Taipei City Psychiatric Center, Taipei City Hospital, Taipei, Taiwan
| | - Chun-Hung Pan
- Taipei City Psychiatric Center, Taipei City Hospital, Taipei, Taiwan; Department of Psychology, National Chengchi University, Taipei, Taiwan
| | - Pao-Huan Chen
- Department of Psychiatry, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Psychiatric Research Center, Taipei Medical University Hospital, Taipei, Taiwan
| | - Yi-Lung Chen
- Taipei City Psychiatric Center, Taipei City Hospital, Taipei, Taiwan
| | - Sheng-Siang Su
- Taipei City Psychiatric Center, Taipei City Hospital, Taipei, Taiwan
| | - Shang-Ying Tsai
- Department of Psychiatry, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Psychiatric Research Center, Taipei Medical University Hospital, Taipei, Taiwan
| | - Chiao-Chicy Chen
- Department of Psychiatry, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Psychiatric Research Center, Taipei Medical University Hospital, Taipei, Taiwan; Department of Psychiatry, Mackay Memorial Hospital, Taipei, Taiwan; Department of Psychiatry, Mackay Medical College, Taipei, Taiwan
| | - Chian-Jue Kuo
- Taipei City Psychiatric Center, Taipei City Hospital, Taipei, Taiwan; Department of Psychiatry, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Psychiatric Research Center, Taipei Medical University Hospital, Taipei, Taiwan.
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19
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Feinstein JS, Gould D, Khalsa SS. Amygdala-driven apnea and the chemoreceptive origin of anxiety. Biol Psychol 2022; 170:108305. [PMID: 35271957 DOI: 10.1016/j.biopsycho.2022.108305] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 02/09/2022] [Accepted: 03/03/2022] [Indexed: 12/13/2022]
Abstract
Although the amygdala plays an important part in the pathogenesis of anxiety and generation of exteroceptive fear, recent discoveries have challenged the directionality of this brain-behavior relationship with respect to interoceptive fear. Here we highlight several paradoxical findings including: (1) amygdala lesion patients who experience excessive fear and panic following inhalation of carbon dioxide (CO2), (2) clinically anxious patients who have significantly smaller (rather than larger) amygdalae and a pronounced hypersensitivity toward CO2, and (3) epilepsy patients who exhibit apnea immediately following stimulation of their amygdala yet have no awareness that their breathing has stopped. The above findings elucidate an entirely novel role for the amygdala in the induction of apnea and inhibition of CO2-induced fear. Such a role is plausible given the strong inhibitory connections linking the central nucleus of the amygdala with respiratory and chemoreceptive centers in the brainstem. Based on this anatomical arrangement, we propose a model of Apnea-induced Anxiety (AiA) which predicts that recurring episodes of apnea are being unconsciously elicited by amygdala activation, resulting in transient spikes in CO2 that provoke fear and anxiety, and lead to characteristic patterns of escape and avoidance behavior in patients spanning the spectrum of anxiety. If this new conception of AiA proves to be true, and activation of the amygdala can repeatedly trigger states of apnea outside of one's awareness, then it remains possible that the chronicity of anxiety disorders is being interoceptively driven by a chemoreceptive system struggling to maintain homeostasis in the midst of these breathless states.
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Affiliation(s)
- Justin S Feinstein
- Laureate Institute for Brain Research, Tulsa, Oklahoma, USA, 74136; University of Tulsa, Oxley College of Health Sciences, Tulsa, Oklahoma, USA, 74104; University of Iowa, Department of Neurology, Iowa City, Iowa, USA, 52242.
| | - Dylan Gould
- Laureate Institute for Brain Research, Tulsa, Oklahoma, USA, 74136
| | - Sahib S Khalsa
- Laureate Institute for Brain Research, Tulsa, Oklahoma, USA, 74136; University of Tulsa, Oxley College of Health Sciences, Tulsa, Oklahoma, USA, 74104
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20
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Rabasco A, McKay D, Smits JA, Powers MB, Meuret AE, McGrath PB. Psychosocial treatment for panic disorder: An umbrella review of systematic reviews and meta-analyses. J Anxiety Disord 2022; 86:102528. [PMID: 35063924 DOI: 10.1016/j.janxdis.2022.102528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 12/17/2021] [Accepted: 01/09/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Panic disorder is a common and disabling psychiatric condition marked by sudden onset of physiological sensations that are appraised as dangerous. A number of studies and reviews have examined the efficacy of psychosocial treatments for PD; however, there is a lack of overarching reports that discuss the strength of evidence for the different psychosocial treatments for PD. This umbrella review provides an overview of systematic reviews and meta-analyses on psychosocial treatments for PD. METHODS A systematic search and review of the literature was conducted according to PRISMA guidelines. RESULTS A total of 38 reviews (31 meta-analyses and 7 systematic reviews) were included in the umbrella review. Most of the 38 reviews were focused on the use of CBT, both in-person and internet-based, to treat PD among adults, generally finding it to be an efficacious treatment compared to control conditions. A limited number of the 38 reviews included other age ranges or examined other forms of psychosocial treatments. The methodological quality of most included reviews was rated as critically low according to the AMSTAR-2 rating system. CONCLUSIONS Future reviews should focus on improving their methodological quality. Although the included reviews supported CBT as an efficacious treatment for reducing panic symptoms among adults, future research could focus on how CBT compares to other psychosocial treatments and the efficacy of CBT for PD among other populations (e.g., children and adolescents) and among diverse cultural groups.
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Affiliation(s)
- Ana Rabasco
- Fordham University, 441 East Fordham Rd., Bronx, NY 10458, USA.
| | - Dean McKay
- Fordham University, 441 East Fordham Rd., Bronx, NY 10458, USA
| | - Jasper A Smits
- University of Texas at Austin, 110 Inner Campus Dr., Austin, TX 78705, USA
| | - Mark B Powers
- Baylor University Medical Center, 3409 Worth St., Dallas, TX 75246, USA
| | - Alicia E Meuret
- Southern Methodist University, 6425 Boaz Ln., Dallas, TX 75205, USA
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21
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Chu L, Sun X, Jia X, Li D, Gao P, Zhang Y, Li J. The Relationship Among BDNF Val66Met Polymorphism, Plasma BDNF Level, and Trait Anxiety in Chinese Patients With Panic Disorder. Front Psychiatry 2022; 13:932235. [PMID: 35815047 PMCID: PMC9259790 DOI: 10.3389/fpsyt.2022.932235] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 05/30/2022] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Brain-derived neurotrophic factor (BDNF) is a candidate for susceptibility locus of Panic disorder (PD). However, the findings about the role of the BDNF Val66Met variant in PD were not consistent. Till now, the relationship between BDNF Val66Met polymorphism and anxiety-related traits in PD patients has been rarely explored. This study aimed to explore the relationship among BDNF Val66Met polymorphism, plasma BDNF level and anxiety-related trait in Chinese PD patients. METHOD This multi-center study included 116 PD patients and 99 health controls. We detected single-nucleotide polymorphism (SNP) of BDNF rs6265 (Val66Met) and BDNF plasma level in the two groups. In addition, PD patients were administered the State-Trait Anxiety Inventory (STAI), Panic Disorder Severity Scale-Chinese Version (PDSS-CV) and Hamilton Anxiety Rating Scale (HAMA-14). Quantitative comparison of the differences of BDNF concentration among subjects with different genotypes and association between BDNF Val66Met genotype and trait anxiety were performed. RESULTS There were no significant differences in the genotype frequency (p = 0.79) or allele frequency (p = 0.88) between PD patients and health controls. BDNF plasma levels of PD patients were significantly lower than those in control group (p = 0.003). BDNF plasma levels of the Met/Met genotype were significantly lower than those of Val/Met genotype in PD patients (p = 0.033). PD patients carried Met/Met genotype showed significantly higher scores in STAI trait compared to those carried Val/Val genotype (p = 0.045) and Val/Met genotype (p = 0.018). STAI trait scores of PD patients with agoraphobia were significantly higher than those of patients without agoraphobia (p < 0.05). The ANCOVA showed that the dependent variable STAI trait score was significantly affected by factor "genotype" (Val/Val, Val/Met, Met/Met, p = 0.029), and covariate "agoraphobia" (p = 0.008). In this model, 11.5% of the variance of the STAI trait score was explained by the BDNF genotype. Contrast analysis showed STAI trait scores of Met/Met subjects were significantly higher than those of Val/Met (p = 0.018) and Val/Val individuals (p = 0.045). CONCLUSION We found that anxiety trait was associated with the BDNF polymorphism in PD patients. BDNF Met/Met genotype may decrease plasma BDNF level and increase trait anxiety in panic disorder.
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Affiliation(s)
- Lijun Chu
- Laboratory of Biological Psychiatry, Institute of Mental Health, Tianjin Anding Hospital, Mental Health Center of Tianjin Medical University, Tianjin, China
| | - Xia Sun
- Laboratory of Biological Psychiatry, Institute of Mental Health, Tianjin Anding Hospital, Mental Health Center of Tianjin Medical University, Tianjin, China
| | - Xiaoju Jia
- Laboratory of Biological Psychiatry, Institute of Mental Health, Tianjin Anding Hospital, Mental Health Center of Tianjin Medical University, Tianjin, China
| | - Dazhi Li
- Laboratory of Biological Psychiatry, Institute of Mental Health, Tianjin Anding Hospital, Mental Health Center of Tianjin Medical University, Tianjin, China
| | - Ping Gao
- Laboratory of Biological Psychiatry, Institute of Mental Health, Tianjin Anding Hospital, Mental Health Center of Tianjin Medical University, Tianjin, China
| | - Yong Zhang
- Laboratory of Biological Psychiatry, Institute of Mental Health, Tianjin Anding Hospital, Mental Health Center of Tianjin Medical University, Tianjin, China
| | - Jie Li
- Laboratory of Biological Psychiatry, Institute of Mental Health, Tianjin Anding Hospital, Mental Health Center of Tianjin Medical University, Tianjin, China
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22
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Xie Z, Jiang W, Deng M, Wang W, Xie X, Feng X, Shi Y, Zhang X, Song D, Yuan Z, Wang Y. Alterations of oral microbiota in patients with panic disorder. Bioengineered 2021; 12:9103-9112. [PMID: 34666612 PMCID: PMC8806997 DOI: 10.1080/21655979.2021.1994738] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The main characteristics of panic disorder (PD) include recurrent panic attacks and persistent worry, accompanied by other physical and cognitive symptoms. While recent studies have revealed that gut bacteria play an important role in anxiety and depression, little is known about the relationship between oral microbiota and PD. Therefore, the objective of this study was to explore a possible correlation between oral microbiota and PD. We conducted 16S rRNA sequencing to compare differences in the oral microbiota of patients with PD (n = 26) and healthy controls (n = 40). Patients with PD exhibited higher alpha diversity (abundance and evenness) in their oral microbiota than healthy controls, while analysis of beta diversity revealed that the two groups differed in microbial community composition. Moreover, the relative abundance of 61 genera differed between them. Overall, PD resulted in distinct oral microbial profiles that could be potential diagnostic markers and therapeutic targets.
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Affiliation(s)
- Zunli Xie
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Weiqing Jiang
- Department of Neurology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai, China
| | - Mingzhu Deng
- Department of Health and Medicine, Xuchang Vocational Technical College, Xuchang, China
| | - Wei Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xian Xie
- Department of Computer Science and Technology, Donghua University, Shanghai, China
| | - Xia Feng
- Department of Neurology, The Second Affilliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Yinping Shi
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xueyan Zhang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Dong Song
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ziyu Yuan
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yonggang Wang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Headache Center, China National Clinical Research Center for Neurological Diseases, Beijing, China
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Ma M, Shi Z, Wu H, Ma X. Clinical implications of panic attack in Chinese patients with somatoform disorders. J Psychosom Res 2021; 146:110509. [PMID: 33984592 DOI: 10.1016/j.jpsychores.2021.110509] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 05/04/2021] [Accepted: 05/05/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Somatoform disorders are frequently accompanied by panic attack and causes many clinical symptoms. This study aimed to compare clinical features between patients with and without panic attack in somatoform disorder. METHODS In this cross-sectional study, 341 patients with somatoform disorder according to the MINI-International Neuropsychiatric Interview (M.I.N·I.) were divided into two groups depending on with or without comorbidity of a panic attack, somatoform disorder with a panic attack (SPA, n = 88) and those without panic attack (SNPA, n = 253). Patient Health Questionnaire (PHQ-15), Patient Health Questionnaire (PHQ-9) and 7-item Generalized Anxiety Disorder (GAD-7) scale was used to identify correlations between SPA group and SNPA group, respectively. Correlation analysis and multivariate regression analysis were used to determine the effects of demographic factors and psychiatric diagnoses on somatic, depressive and anxiety symptoms separately. RESULTS The SPA group's PHQ-15, PHQ-9 and GAD-7 scores were significantly higher than those of the SNPA group. Multiple linear regression analyses revealed that the associated factors for PHQ-15 were gender and panic disorder. PHQ-9 was just significantly associated with panic disorder. GAD-7 was significantly associated with education degree and panic disorder. CONCLUSIONS Our results suggest that somatoform disorder patients with panic attack suffered more severe clinical symptoms than those without a panic attack.
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Affiliation(s)
- Min Ma
- Wuhan Mental Health Center, Wuhan, China
| | - Zhidao Shi
- Shanghai Pudong New Area Mental Health Center, Tongji University School of Medicine, Shanghai, China
| | - Heng Wu
- Department of Psychosomatic Medicine, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiquan Ma
- Department of Psychosomatic Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.
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Subcortical gray matter volumes in asthma: associations with asthma duration, control, and anxiety. Brain Imaging Behav 2021; 14:2341-2350. [PMID: 31501976 PMCID: PMC8116327 DOI: 10.1007/s11682-019-00188-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Asthma as a chronic inflammatory disease can be expected to affect central nervous system structures but little is known about subcortical structures in asthma and their potential association with illness-specific outcomes and anxiety. A total of 40 young adults (20 with asthma and 20 gender- and age-matched controls) underwent high-resolution T1-weighted MRI scan, viewed short distressing film clips, and filled in questionnaires about anxious and depressed mood, as well as asthma history, control, and catastrophizing thoughts about asthma, for those with asthma. The structural scans were processed in FSL's FIRST program to delineate subcortical structures of interest: amygdala, hippocampus, putamen, pallidum, caudate nucleus, nucleus accumbens, and thalamus. Findings showed no general reduction in subcortical gray matter volumes in asthma compared to controls. Asthma duration, asthma control, and catastrophizing of asthma and asthma attacks were negatively associated with volumes of putamen and pallidum, and to a weaker extent thalamus and amygdala, while controlling for gender, age, and corticosteroid inhaler use. In addition, stronger anxiety in response to distressing films was associated with lower volume of the pallidum, whereas general anxious and depressed mood was unrelated to subcortical structures. Thus, although there are no subcortical structural differences between young adults with asthma and healthy controls, longer asthma history, suboptimal management, and illness-related anxiety are reflected in lower gray matter volumes of subcortical structures, further emphasizing the importance of maintaining optimal asthma control.
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Lavretsky H, Feldman PhD JL. Precision Medicine for Breath-Focused Mind-Body Therapies for Stress and Anxiety: Are We Ready Yet? Glob Adv Health Med 2021; 10:2164956120986129. [PMID: 33489480 PMCID: PMC7809295 DOI: 10.1177/2164956120986129] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/05/2020] [Accepted: 12/16/2020] [Indexed: 11/16/2022] Open
Abstract
In this viewpoint, we present an argument for transdisciplinary "precision medicine" approaches that combine studies of basic neurobiology of breathing in animal and human models of stress that can help characterize physiological and neural biomarkers and mechanisms of breathing control and emotion regulation in humans. Such mechanistic research is fundamental for the development of more effective and mechanism-based mind-body therapies. The potential for this research to positively impact public health is high, as breathing techniques are inexpensive, accessible, and cross-culturally accepted, with fewer complications then observed with other standard therapies for stress-related disorders.
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Affiliation(s)
- Helen Lavretsky
- Jane and Terry Semel Institute for Neuroscience and Human Behavior, UCLA, Los Angeles, California
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26
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Tunnell N, Ritz T, Wilhelm FH, Roth WT, Meuret AE. Habituation or Normalization? Experiential and Respiratory Recovery From Voluntary Hyperventilation in Treated Versus Untreated Patients With Panic Disorder. Behav Ther 2021; 52:124-135. [PMID: 33483110 PMCID: PMC9020269 DOI: 10.1016/j.beth.2020.03.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 03/11/2020] [Accepted: 03/12/2020] [Indexed: 10/24/2022]
Abstract
Psychophysiological theories postulate respiratory dysregulation as a mechanism contributing to panic disorder (PD). Additionally, symptomatic and respiratory recovery from voluntary hyperventilation (HVT-recovery) have been shown to lag in PD and it is unclear if HVT-recovery normalizes with treatment. Thirty-seven panic disorder patients were randomized to hypoventilation therapy (TX, n = 20) or waitlist control (WL, n = 17) (Meuret et al., 2008). In a secondary analysis, their HVT-recovery was analyzed at pre- and post-TX/WL, compared to 29 healthy controls (HC). HVT included three phases: 5-min baseline, 3-min hyperventilation, and 8-min recovery. HVT-elicited symptom severity and anxiety were rated following each phase, and end-tidal PCO2 and respiratory rate (RR) were recorded throughout. Treatment, compared to WL, was highly effective in reducing PD pathology (d=2.21, Meuret et al., 2008). At pre-TX/WL, PD demonstrated delayed HVT-recovery PCO2 and higher RR. Treated patients demonstrated normalization of HVT-recovery for PCO2 and RR; however, improvements of HVT-recovery for symptom severity and anxiety did not differ between TX and WL. Results replicate pretreatment HVT respiratory recovery abnormalities in PD and further demonstrate normalization, comparable to HC, following successful treatment. The results provide support for respiratory dysregulation as a feature of PD and demonstrate the utility of HVT respiratory recovery as treatment outcome measure for respiration-based PD therapy.
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Affiliation(s)
| | - Thomas Ritz
- Southern Methodist University, Department of Psychology
| | - Frank H. Wilhelm
- University of Salzburg, Department of Psychology, Division of Clinical Psychology, Psychotherapy, and Health Psychology
| | - Walton T. Roth
- Stanford University, Department of Psychiatry, and the VA Palo Alto Health Care System
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Petersen CL, Chen JQ, Salas LA, Christensen BC. Altered immune phenotype and DNA methylation in panic disorder. Clin Epigenetics 2020; 12:177. [PMID: 33208194 PMCID: PMC7672933 DOI: 10.1186/s13148-020-00972-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 11/09/2020] [Indexed: 11/10/2022] Open
Abstract
Background Multiple studies have related psychiatric disorders and immune alterations. Panic disorder (PD) has been linked with changes in leukocytes distributions in several small studies using different methods for immune characterization. Additionally, alterations in the methylation of repetitive DNA elements, such as LINE-1, have been associated with mental disorders. Here, we use peripheral blood DNA methylation data from two studies and an updated DNA methylation deconvolution library to investigate the relation of leukocyte proportions and methylation status of repetitive elements in 133 patients with panic disorder compared with 118 controls. Methods and results We used DNA methylation data to deconvolute leukocyte cell-type proportions and to infer LINE-1 element methylation comparing PD cases and controls. We also identified differentially methylated CpGs associated with PD using an epigenome-wide association study approach (EWAS), with models adjusting for sex, age, and cell-type proportions. Individuals with PD had a lower proportion of CD8T cells (OR: 0.86, 95% CI: 0.78–0.96, P-adj = 0.030) when adjusting for age, sex, and study compared with controls. Also, PD cases had significantly lower LINE-1 repetitive element methylation than controls (P < 0.001). The EWAS identified 61 differentially methylated CpGs (58 hypo- and 3 hypermethylated) in PD (Bonferroni adjusted P < 1.33 × 10–7). Conclusions These results suggest that those with panic disorder have changes to their immune system and dysregulation of repeat elements relative to controls.
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Affiliation(s)
- Curtis L Petersen
- The Dartmouth Institute for Health Policy and Clinical Practice, Lebanon, NH, 03766, USA.,Quantitative Biomedical Science Program, Geisel School of Medicine at Dartmouth, Lebanon, NH, 03766, USA
| | - Ji-Qing Chen
- Program for Experimental and Molecular Medicine, Geisel School of Medicine at Dartmouth, Lebanon, NH, 03766, USA
| | - Lucas A Salas
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Lebanon, NH, 03766, USA
| | - Brock C Christensen
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Lebanon, NH, 03766, USA. .,Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Lebanon, NH, 03766, USA. .,Dartmouth Hitchcock Medical Center, 1 Medical Center Dr, 660 Williamson Translation Research Building, Lebanon, NH, 03756, USA.
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Scheer V, Blanco C, Olfson M, Lemogne C, Airagnes G, Peyre H, Limosin F, Hoertel N. A comprehensive model of predictors of suicide attempt in individuals with panic disorder: Results from a national 3-year prospective study. Gen Hosp Psychiatry 2020; 67:127-135. [PMID: 33129137 DOI: 10.1016/j.genhosppsych.2020.09.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 09/20/2020] [Accepted: 09/28/2020] [Indexed: 02/04/2023]
Abstract
OBJECTIVE People with panic disorder are at increased risk of suicide. Multiple factors influence their risk suggesting a need to combine them into an integrative model to develop more effective suicide prevention strategies for this population. In this report, we sought to build a comprehensive model of the 3-year risk of suicide attempt in individuals with panic disorder using a longitudinal nationally representative study, the National Epidemiologic Survey on Alcohol and Related Conditions (NESARC; wave 1, 2001-2002; wave 2, 2004-2005). METHOD We used structural equation modeling to simultaneously examine effects of six broad groups of clinical factors previously identified as potential predictors of suicide attempt in adults with panic disorder: 1) severity of panic disorder, 2) severity of comorbidity, 3) prior history of suicide attempt, 4) family history of psychiatric disorders, 5) sociodemographic characteristics and 6) treatment-seeking behavior. RESULTS The 3-year prevalence rate of suicide attempt was 4.6%. A general psychopathology factor, lower physical health-related quality of life, prior suicide attempt and a greater number of stressful life events at baseline significantly and independently predicted suicide attempt between the two waves (p < .05). R-square of the models ranged from 0.47 to 0.50. CONCLUSION This model may help inform future research and identify high-risk individuals among adults with panic disorder.
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Affiliation(s)
- Valentin Scheer
- Service de Psychiatrie et d'Addictologie de l'adulte et du sujet âgé, DMU Psychiatrie et Addictologie, AP-HP.Centre-Université de Paris, France.
| | - Carlos Blanco
- Division of Epidemiology, Services, and Prevention Research, National Institute on Drug Abuse, Bethesda, MD, USA
| | - Mark Olfson
- Department of Psychiatry, New York State Psychiatric Institute / Columbia University, New York, NY 10032, USA
| | - Cédric Lemogne
- Service de Psychiatrie et d'Addictologie de l'adulte et du sujet âgé, DMU Psychiatrie et Addictologie, AP-HP.Centre-Université de Paris, France; Faculté de médecine Paris Descartes, Université de Paris, Paris, France; Inserm U1266, Institut de Psychiatrie et Neurosciences de Paris, Paris, France
| | - Guillaume Airagnes
- Service de Psychiatrie et d'Addictologie de l'adulte et du sujet âgé, DMU Psychiatrie et Addictologie, AP-HP.Centre-Université de Paris, France; UMS 011, Population-based Epidemiological Cohorts, Inserm, Villejuif, France
| | - Hugo Peyre
- Robert Debré Hospital, Child and Adolescent Psychiatry Department, Assistance Publique-Hôpitaux de Paris, Paris, France; Cognitive Sciences and Psycholinguistic Laboratory, Ecole Normale Supérieure, Paris, France
| | - Frédéric Limosin
- Service de Psychiatrie et d'Addictologie de l'adulte et du sujet âgé, DMU Psychiatrie et Addictologie, AP-HP.Centre-Université de Paris, France; Faculté de médecine Paris Descartes, Université de Paris, Paris, France; Inserm U1266, Institut de Psychiatrie et Neurosciences de Paris, Paris, France
| | - Nicolas Hoertel
- Service de Psychiatrie et d'Addictologie de l'adulte et du sujet âgé, DMU Psychiatrie et Addictologie, AP-HP.Centre-Université de Paris, France; Faculté de médecine Paris Descartes, Université de Paris, Paris, France; Inserm U1266, Institut de Psychiatrie et Neurosciences de Paris, Paris, France
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Psychometric Properties of Persian Version of Structured Clinical Interview for DSM-5-Research Version (SCID-5-RV): A Diagnostic Accuracy Study. IRANIAN JOURNAL OF PSYCHIATRY AND BEHAVIORAL SCIENCES 2020. [DOI: 10.5812/ijpbs.100930] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Background: The structured clinical interview for DSM-5 has recently been revised to reflect the new findings in the diagnostic criteria of psychological disorders. Objectives: The present study aimed to evaluate the reliability and validity of the Persian translation of structured clinical interview for diagnostic and statistical manual of mental disorders-fifth edition (DSM-5)-research version (SCID-5-RV) on Iranian adult population. Methods: In the current diagnostic accuracy study a total of 305 clinical samples were admitted to fifteen adult clinical settings and a subsample of these participants (n = 50, with a mean age of 34.31 and a standard deviation of 11.96) was recruited to evaluate test-retest reliability, and 40 non-clinical participants were recruited to examine construct validity. All participants completed the Millon Clinical Multiaxial inventory-III (MCMI-III) and Brief Symptom inventory (BSI). Results: SCID psychometric properties indicated an acceptable range for internal consistency (0.95 - 0.99), test-retest reliability (0.60 - 0.79), and Kappa reliability (0.57 - 0.72). Further, the agreement between interviewer and psychiatrist diagnoses was assessed using the Kappa index, and the result was satisfactory. The current diagnostic accuracy study used sensitivity and specificity indexes to assess the diagnostic validity of SCID by positive predictive value and also negative predictive value under the “likelihood ratio” domain. Specificity values for most psychiatric disorders were high; the sensitivity values were to somewhat lower. Furthermore, SCID-5-RV categorical diagnoses demonstrated an acceptable construct validity based on the significant differences between the clinical and non-clinical samples in all subscales of BSI except for phobia as well as all clinical subscales of MCMI-III. Conclusions: In general, the Persian translation of SCID-5-RV represented acceptable reliability and validity for various categorical diagnoses in different clinical settings.
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Caldirola D, Alciati A, Daccò S, Micieli W, Perna G. Relapse prevention in panic disorder with pharmacotherapy: where are we now? Expert Opin Pharmacother 2020; 21:1699-1711. [PMID: 32543949 DOI: 10.1080/14656566.2020.1779220] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Introduction: A substantial number of patients with PD experience relapse after the discontinuation of effective pharmacotherapy, leading to detrimental effects on the individuals and considerable societal costs. This suggests the need to optimize pharmacotherapy to minimize relapse risk. Area covered: The present systematic review examines randomized, double-blind, placebo-controlled relapse prevention studies published over the last 20 years involving recommended medications. The authors aim to provide an overview of this topic and evaluate whether recent advances were achieved. Only seven studies were included, providing limited results. One-year maintenance pharmacotherapy with constant doses had protective effects against relapse in patients who had previously exhibited satisfactory responses to the same medication at the same doses. The duration of maintenance treatment did not influence relapse risk. No data were available concerning the use of lower doses or the predictors of relapse. Expert opinion: Relapse prevention in PD has received limited attention. Recent progress and conclusive indications are lacking. Rethinking pharmacological research in PD may be productive. Collecting a wide range of clinical and individual features/biomarkers in large-scale, multicenter long-term naturalistic studies, and implementing recent technological innovations (e.g., electronic medical records/'big data' platforms, wearable devices, and machine learning techniques) may help identify reliable predictive models.
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Affiliation(s)
- Daniela Caldirola
- Department of Clinical Neurosciences, Villa San Benedetto Menni Hospital, Hermanas Hospitalarias , Albese Con Cassano (Como), Italy.,Department of Biomedical Sciences, Humanitas University , Pieve Emanuele (Milan), Italy
| | - Alessandra Alciati
- Department of Clinical Neurosciences, Villa San Benedetto Menni Hospital, Hermanas Hospitalarias , Albese Con Cassano (Como), Italy.,Humanitas Clinical and Research Center, IRCCS , Rozzano (Milan), Italy
| | - Silvia Daccò
- Department of Clinical Neurosciences, Villa San Benedetto Menni Hospital, Hermanas Hospitalarias , Albese Con Cassano (Como), Italy.,Department of Biomedical Sciences, Humanitas University , Pieve Emanuele (Milan), Italy
| | - Wilma Micieli
- Department of Clinical Neurosciences, Villa San Benedetto Menni Hospital, Hermanas Hospitalarias , Albese Con Cassano (Como), Italy
| | - Giampaolo Perna
- Department of Clinical Neurosciences, Villa San Benedetto Menni Hospital, Hermanas Hospitalarias , Albese Con Cassano (Como), Italy.,Department of Biomedical Sciences, Humanitas University , Pieve Emanuele (Milan), Italy.,Department of Psychiatry and Neuropsychology, Faculty of Health, Medicine and Life Sciences, Maastricht University , Maastricht, The Netherlands.,Department of Psychiatry and Behavioral Sciences, Leonard Miller School of Medicine, Miami University , Miami, FL, USA
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31
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Answers to complex problems require comprehensive and accurate data. J Dev Orig Health Dis 2020; 12:343-344. [PMID: 32468971 DOI: 10.1017/s2040174420000434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Meuret AE, Tunnell N, Roque A. Anxiety Disorders and Medical Comorbidity: Treatment Implications. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1191:237-261. [PMID: 32002933 DOI: 10.1007/978-981-32-9705-0_15] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Anxiety disorders are debilitating psychological disorders characterized by a wide range of cognitive and somatic symptoms. Anxiety sufferers have a higher lifetime prevalence of various medical problems. Chronic medical conditions furthermore increase the likelihood of psychiatric disorders and overall dysfunction. Lifetime rates of cardiovascular, respiratory, gastrointestinal, and other medical problems are disproportionately high in anxiety and panic/fear sufferers. The heightened comorbidity is not surprising as many symptoms of anxiety and panic/fear mimic symptoms of medical conditions. Panic disorder specifically is strongly linked to medical conditions due to its salient somatic symptoms, such as dyspnea, dizziness, numbness, chest pain, and heart palpitations, all of which can signal danger and deterioration for chronic disease sufferers. This chapter identifies shared correlates of medical illness and anxiety disorders and evidence for misinterpretation of symptoms as medically relevant and offers an analysis of implications for treatment of both types of conditions. We will concentrate on medical conditions with high associations for anxiety and panic by aspects of symptomatology, specifically neurological disorders (fibromyalgia, epilepsy, cerebral palsy), diabetes, gastrointestinal illness (irritable bowel syndrome, gastroesophageal reflux disease), and cardiovascular and respiratory illnesses (asthma).
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Affiliation(s)
- Alicia E Meuret
- Department of Psychology, Southern Methodist University, Dallas, TX, USA.
| | - Natalie Tunnell
- Department of Psychology, Southern Methodist University, Dallas, TX, USA
| | - Andres Roque
- Department of Psychology, Southern Methodist University, Dallas, TX, USA
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Sex differences in incidence and psychiatric comorbidity for alcohol dependence in patients with panic disorder. Drug Alcohol Depend 2020; 207:107814. [PMID: 31887603 DOI: 10.1016/j.drugalcdep.2019.107814] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 11/13/2019] [Accepted: 12/16/2019] [Indexed: 12/22/2022]
Abstract
BACKGROUND Sex differences in the development of alcohol dependence (AD) among patients with panic disorder (PD) remain unexplored. The study investigated sex as an effect modifier in the incidence of AD among patients with PD. METHOD We included 9480 patients with PD from the Taiwan National Health Insurance Research Database. A total of 169 patients (89 men and 80 women) developed incident AD during the follow-up period. Standardized incidence ratios (SIRs) were used to represent the relative risks of incident AD compared with the general population. Based on a nested case-control study design, 10 controls were selected for each case. Medical utilization and psychiatric comorbidity before diagnosing AD were analyzed using conditional logistic regression. RESULTS The SIR of incident AD was 3.36 for men and 6.29 for women. Women with PD and incident AD had more visits to the outpatient department than the controls did, whereas men exhibited no significant differences. Women with incident AD were more likely to comorbid with depressive disorder (adjusted risk ratio [aRR] = 2.94), personality disorder (aRR = 5.03), and sleep disorder (aRR = 1.72), whereas men with incident AD were more likely to comorbid with sleep disorder (aRR = 1.85) and other substance use disorders (aRR = 3.08). CONCLUSION Patients with PD have an additional risk of developing AD compared with the general population, and that risk is higher in women. Women and men exhibited dissimilar patterns of medical utilization and psychiatric comorbidity before developing AD. Sex differences should be taken into consideration when establishing preventive measures.
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Kim K, Jang EH, Kim AY, Fava M, Mischoulon D, Papakostas GI, Kim H, Na EJ, Yu HY, Jeon HJ. Pre-treatment peripheral biomarkers associated with treatment response in panic symptoms in patients with major depressive disorder and panic disorder: A 12-week follow-up study. Compr Psychiatry 2019; 95:152140. [PMID: 31669792 DOI: 10.1016/j.comppsych.2019.152140] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 09/11/2019] [Accepted: 10/15/2019] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVE Peripheral biomarkers have been studied to predict treatment response of panic symptoms. We hypothesized that depressive disorder (MDD) vs. panic disorder (PD) would exhibit different peripheral biomarkers, and their correlation with severity of panic attacks (PA) would also differ. METHODS Forty-one MDD patients, 52 PD patients, and 59 healthy controls were followed for 12 weeks. We measured peripheral biomarkers along with the Panic Disorder Severity Scale (PDSS) at each visit-pre-treatment, 2, 4, 8, and 12 weeks on a regular schedule. Peripheral biomarkers including serum cytokines, plasma and serum brain-derived neurotrophic factor (BDNF), leptin, adiponectin, and C-reactive protein (CRP) were quantified using enzyme-linked immunosorbent assay (ELISA). RESULTS Patients with MDD and PD demonstrated significantly higher levels of pre-treatment IL-6 compared to controls, but no differences were seen in plasma and serum BDNF, leptin, adiponectin, and CRP. Pre-treatment leptin showed a significant clinical correlation with reduction of panic symptoms in MDD patients at visit 5 (p=0.011), whereas pre-treatment IL-6 showed a negative correlation with panic symptom reduction in PD patients (p=0.022). An improvement in three panic-related items was observed to be positively correlated with pre-treatment leptin in MDD patients: distress during PA, anticipatory anxiety, and occupational interference. CONCLUSION Higher pre-treatment leptin was associated with better response to treatment regarding panic symptoms in patients with MDD, while higher IL-6 was associated with worse response regarding panic symptoms in PD patients. Different predictive peripheral biomarkers observed in MDD and PD suggest the need for establishing individualized predictive biomarkers, even in cases of similar symptoms observed in different disorders.
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Affiliation(s)
- Kiwon Kim
- Department of Psychiatry, Veteran Health Service Medical Center, Seoul, South Korea; Department of Psychiatry, Depression Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Eun Hye Jang
- Bio-Medical IT Convergence Research Division, Electronics and Telecommunications Research Institute (ETRI), Republic of Korea
| | - Ah Young Kim
- Bio-Medical IT Convergence Research Division, Electronics and Telecommunications Research Institute (ETRI), Republic of Korea
| | - Maurizio Fava
- Depression Clinical and Research Program, Massachusetts General Hospital, Harvard Medical School, Boston, USA
| | - David Mischoulon
- Depression Clinical and Research Program, Massachusetts General Hospital, Harvard Medical School, Boston, USA
| | - George I Papakostas
- Depression Clinical and Research Program, Massachusetts General Hospital, Harvard Medical School, Boston, USA
| | - Hyewon Kim
- Department of Psychiatry, Depression Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Eun Jin Na
- Department of Psychiatry, Depression Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Han Young Yu
- Bio-Medical IT Convergence Research Division, Electronics and Telecommunications Research Institute (ETRI), Republic of Korea
| | - Hong Jin Jeon
- Department of Psychiatry, Depression Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Department of Health Sciences & Technology, Department of Medical Device Management & Research, and Department of Clinical Research Design & Evaluation, Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University, Seoul, Republic of Korea.
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Chang HM, Pan CH, Chen PH, Chen YL, Su SS, Tsai SY, Chen CC, Kuo CJ. Identification and medical utilization of newly diagnosed panic disorder: A Nationwide case-control study. J Psychosom Res 2019; 125:109815. [PMID: 31450125 DOI: 10.1016/j.jpsychores.2019.109815] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 08/17/2019] [Accepted: 08/19/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVE Ascertaining comorbid illnesses and patterns of medical utilization early in the course of psychiatric illness can help identify patients with panic disorder. We investigated how such cases were diagnosed and the comorbidities associated with newly diagnosed panic disorder in a nationwide database. METHODS We enrolled a large representative cohort of the general population in Taiwan (N = 1000,000) and selected 9759 cases of panic disorder from January 1, 2000 to December 31, 2013. The distribution of the departments in which the cases were identified and the medical utilization 12 months before diagnosis were analyzed. Based on a nested case-control study, four controls were randomly selected for each case and matched for sex, age, and incidence year. Conditional logistic regression was used to explore the factors associated with newly-diagnosed panic disorder such as demographic factors, concomitant medications, and physical and psychiatric comorbidities. RESULTS Most (58.5%) cases of panic disorder were diagnosed in the psychiatry department, whereas only 3.7% were identified in the emergency department. Before diagnosis, the patients frequently visited the departments of internal medicine, family practice, and Chinese herbal medicine. A multivariate analysis revealed a higher number of physical and psychiatric comorbidities before diagnosis in the cases compared with the controls, especially depressive disorder and other anxiety disorders. CONCLUSIONS Individuals with certain comorbidities and patterns of medical utilization are more likely to be diagnosed with panic disorder. We suggest providing more training to general practitioners and emergency physicians for the early diagnosis of panic disorder.
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Affiliation(s)
- Hu-Ming Chang
- Taipei City Psychiatric Center, Taipei City Hospital, Taipei, Taiwan
| | - Chun-Hung Pan
- Taipei City Psychiatric Center, Taipei City Hospital, Taipei, Taiwan; Department of Psychology, National Chengchi University, Taipei, Taiwan
| | - Pao-Huan Chen
- Department of Psychiatry, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Psychiatric Research Center, Taipei Medical University Hospital, Taipei, Taiwan
| | - Yi-Lung Chen
- Taipei City Psychiatric Center, Taipei City Hospital, Taipei, Taiwan
| | - Sheng-Shiang Su
- Taipei City Psychiatric Center, Taipei City Hospital, Taipei, Taiwan
| | - Shang-Ying Tsai
- Department of Psychiatry, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Psychiatric Research Center, Taipei Medical University Hospital, Taipei, Taiwan
| | - Chiao-Chicy Chen
- Department of Psychiatry, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Department of Psychiatry, Mackay Memorial Hospital, Taipei, Taiwan; Department of Psychiatry, Mackay Medical College, Taipei, Taiwan
| | - Chian-Jue Kuo
- Taipei City Psychiatric Center, Taipei City Hospital, Taipei, Taiwan; Department of Psychiatry, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Psychiatric Research Center, Taipei Medical University Hospital, Taipei, Taiwan.
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Did Human Reality Denial Breach the Evolutionary Psychological Barrier of Mortality Salience? A Theory that Can Explain Unusual Features of the Origin and Fate of Our Species. EVOLUTIONARY PSYCHOLOGY 2019. [DOI: 10.1007/978-3-030-25466-7_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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A functional genetic variation of SLC6A2 repressor hsa-miR-579-3p upregulates sympathetic noradrenergic processes of fear and anxiety. Transl Psychiatry 2018; 8:226. [PMID: 30341278 PMCID: PMC6195525 DOI: 10.1038/s41398-018-0278-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 08/09/2018] [Indexed: 01/05/2023] Open
Abstract
Increased sympathetic noradrenergic signaling is crucially involved in fear and anxiety as defensive states. MicroRNAs regulate dynamic gene expression during synaptic plasticity and genetic variation of microRNAs modulating noradrenaline transporter gene (SLC6A2) expression may thus lead to altered central and peripheral processing of fear and anxiety. In silico prediction of microRNA regulation of SLC6A2 was confirmed by luciferase reporter assays and identified hsa-miR-579-3p as a regulating microRNA. The minor (T)-allele of rs2910931 (MAFcases = 0.431, MAFcontrols = 0.368) upstream of MIR579 was associated with panic disorder in patients (pallelic = 0.004, ncases = 506, ncontrols = 506) and with higher trait anxiety in healthy individuals (pASI = 0.029, pACQ = 0.047, n = 3112). Compared to the major (A)-allele, increased promoter activity was observed in luciferase reporter assays in vitro suggesting more effective MIR579 expression and SLC6A2 repression in vivo (p = 0.041). Healthy individuals carrying at least one (T)-allele showed a brain activation pattern suggesting increased defensive responding and sympathetic noradrenergic activation in midbrain and limbic areas during the extinction of conditioned fear. Panic disorder patients carrying two (T)-alleles showed elevated heart rates in an anxiety-provoking behavioral avoidance test (F(2, 270) = 5.47, p = 0.005). Fine-tuning of noradrenaline homeostasis by a MIR579 genetic variation modulated central and peripheral sympathetic noradrenergic activation during fear processing and anxiety. This study opens new perspectives on the role of microRNAs in the etiopathogenesis of anxiety disorders, particularly their cardiovascular symptoms and comorbidities.
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Abstract
The theme of the Association for Behavioral and Cognitive Therapies (ABCT) 50th Anniversary was to honor the past and envision the future. From the wisdom, foresight, and determination of the pioneers of our organization, and the continuous upholding of the scientific method over the last 50 years, cognitive behavioral therapy (CBT) has become the most empirically supported psychological treatment for a wide array of mental health problems. Yet, we still have a long way to go. This address outlines a vision for the future of CBT, which involves greater collaborative science, with all minds working together on the same problem, and greater attention to the risk factors and critical processes that underlie psychopathology and explain treatment change. Such knowledge generation can inform the development of new, more efficient and more effective therapies that are tailored with more precision to the needs of each person. Latest technologies provide tools for a precision focus while at the same time increasing the reach of our treatments to the many for whom traditional therapies are unavailable. Our impact will be greatly enhanced by large samples with common methods and measures that inform a precision approach. We have come a long way since ABCT was founded in 1966, and we are poised to make even larger strides in our mission to enhance health and well-being by harnessing science, our major guiding principle.
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Hypoventilation Therapy Alleviates Panic by Repeated Induction of Dyspnea. BIOLOGICAL PSYCHIATRY: COGNITIVE NEUROSCIENCE AND NEUROIMAGING 2018; 3:539-545. [PMID: 29573981 DOI: 10.1016/j.bpsc.2018.01.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 01/03/2018] [Accepted: 01/05/2018] [Indexed: 01/03/2023]
Abstract
BACKGROUND Previous research has shown that hypoventilation therapy reduces panic symptoms in part by increasing basal partial pressure of carbon dioxide (PCO2) levels. We tested an additional pathway by which hypoventilation therapy could exert its therapeutic effects: through repeated interoceptive exposure to sensations of dyspnea. METHODS A total of 35 patients with panic disorder were trained to perform exercises to raise their end-tidal PCO2 levels using a portable capnometry device. Anxiety, dyspnea, end-tidal PCO2, and respiratory rate were assessed during each exercise across 4 weeks of training. Mixed-model analysis examined whether within-exercise levels of dyspnea were predictive of reduction of panicogenic cognitions. RESULTS As expected, within-exercise anxiety and respiratory rate decreased over time. Unexpectedly, PCO2 dropped significantly from the beginning to the end of exercise, with these drops becoming progressively smaller across weeks. Dyspnea increased and remained consistently above basal levels across weeks. As hypothesized, greater dyspnea was related to significantly lower panicogenic cognitions over time even after controlling for anxiety and PCO2. Additional exploratory analyses showed that within-exercise increases in dyspnea were related to within-exercise increases in anxiety but were not related to within-exercise increases in PCO2. CONCLUSIONS In support of the interoceptive exposure model, we found that greater dyspnea during hypoventilation exercises resulted in lower panicogenic cognitions even after the effect of PCO2 was taken into account. The findings offer an additional important target in panic treatment.
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